Cuevas, who was leading 6-1, 4-1 when Schwartzman was forced to shake hands, converted five of nine break points to earn a commanding lead on Quadra Central. Improving to 6-2 during the 2019 'Golden Swing', the 33-year-old Uruguayan will meet Cordoba Open champion Juan Ignacio Londero for a place in the quarter-finals.

Taro Daniel recovered from a set down to beat Brazilian wild card Thiago Seyboth Wild 3-6, 6-3, 6-2. The Japanese saved five of six break points to reach the second round after two hours and eight minutes.